Principal researcher at National ICT Australia in Sydney, currently heading the DMiST-project.
Research Interests: Algorithms and data structures, discrete and computational geometry, spatio-temporal analysis, geometric networks.
Member of the Sydney Algorithms and Computational Thinking (SACT) research group. 
Former member of the algorithms group at the Faculty of Mathematics and Computing Science in Eindhoven, the Geometry Lab at the Department of Computer Science in Lund, Sweden and the Geometry, Imaging, and Virtual Environments group at the department of Information and Computing Sciences in Utrecht, the Netherlands.
I have, or have had, five great PhD students:
- Mattias Andersson (Wayfinder)
- Mohammad Farshi (Yazd University)
- Damian Merrick (XP Software)
- Bojan Djordjevic (Google)
- Radwa El Shawi, University of Sydney (started March 2009)
Managing editor for Journal of Computational Geometry (JoCG) and in the editorial board for the International Journal of Computational Geometry and Applications (IJCGA).
Recent/upcoming PC activities: GIScience 2010, SoCG 2011 and GSN 2011.